Case introduce first E-series wheel loader
AT the recent SAIE exhibition in Bologna, Italy, Case unveiled their new 721E wheel loader –– the first in a completely new series of machines capable of working with a multitude of attachments, which the company says will significantly raise the industry standard in wheel loaders.
Replacing the successful ‘D’ series wheel loader models, the new ‘E’ machines have been redesigned from the ground up using the latest technology to deliver higher productivity, increased reliability and lower owning and operating costs.
The 721E is powered by an advanced six-cylinder Case 667TA/EED turbocharged and after-cooled electronically controlled 6.7-litre engine, which provides three power and torque ratings at varying engine revolutions.
Four working modes –– Standard, MaxPower, Economy and Autopower –– allow the machine to be optimized for different applications. In Autopower mode the power curve is automatically matched to the application. Demand is constantly monitored with engine output and torque continually adjusted for maximum performance and efficiency.
In Standard mode, the engine output is 136kW at 1,900 rev/min, while at MaxPower output is increased by 5% to 145kW at 2,000 rev/min, and in Economy mode power is retarded by 5% to 128kW at 1,800 rev/min. By using the correct mode, the operator is able to generate maximum productivity at maximum fuel efficiency.
The engine also provides multiple idle settings. Normal idle speed is 900 rev/min, but in Auto-idle mode cold start idle speed rises to 1,200 rev/min, working idle speed is 900 rev/min, and if there is no load demand on the engine for 30s the rate automatically drops to 600 rev/min, resulting in reduced fuel consumption, lower sound levels and better engine management.
With its drivetrain is matched to the engine output, the 721E’s transmission has four forward and three reverse electronically controlled gears, with limited-slip differentials to both front and rear axles. The machine’s maximum forward travel speed is 38km/h.
Designed as a high-production machine, the 721E operator is provided with an environment that fosters maximum production capacity. The cab itself is slightly longer and 10in wider than previous models, with floor-to-ceiling glass to further enhance the feeling of spaciousness while giving the operator excellent all-round visibility. Visibility to the rear is also greatly improved as a result of the contoured single-piece engine canopy.
The fully adjustable air-suspension seat puts the operator in the most convenient position from which to reach the various controls. A low-effort, single-lever joystick incorporates a quick shuttle switch for faster, more precise operations, while digital displays allow clear reading in all lighting conditions.
The 721E has an operating weight of 13.9 tonnes, a breakout force of 13,519kg and a lift capacity at maximum forward reach of 10.2 tonnes. The machine features a Z-bar linkage for aggressive loading applications, but for greater versatility an alternative parallel linkage is also available, making the loader a highly versatile tool-carrier capable of working with a wide range of attachments on various material-handling tasks.
A one-piece electric-lift hood, fluid sight gauges on all reservoirs and grouped service points simplify daily maintenance checks. In addition, the engine is located behind the rear axles, which enables easy access to all parts for routine servicing. The changing of fluids has also been simplified with fluid drains for the engine oil, coolant and hydraulic oil positioned for ease of access and to minimize any risk of spillage.
